High temperature alarm indicates overheating, which may be caused by fan failure, a dirty condenser, blocked air channels, or excessive heat load. The manual's first action is: “Make sure internal fan and external fan work normally; Check condenser if it's dirty or blocked; Check internal fan air channel; Check heat load.”
- Model
- Pfannenberg DTS 8000E 50/60Hz
- Display shows
- High temperature (AL03)
- Type
- Alarm code
- Source
- Manual p. 54
What AL03 means
High temperature p. 54
Common causes
- If alarm AL02, cooling until stops running; p. 54
What to do
- Make sure internal fan and external fan work normally; Check condenser if it's dirty or blocked; Check internal fan air channel; Check heat load. p. 54
If AL03 is still not resolved
The manual gives no further instruction for this code. Open the code table in the PDF or contact Pfannenberg service.
This page summarises what the manufacturer’s manual says about AL03; each statement links to the page it comes from, and quoted lines are copied word for word. It is not a substitute for the manual or for a qualified installer. ManualLib is not affiliated with Pfannenberg. Found a mistake? Report an error.